This is a DML 1:6 Scale U.S. WWII Combat Engineer GI Mustard Wool Trousers.
Photos shows M1941 Field Jacket, GI Wool Shirt and Flak Suit were sold separately.
"Bryan Gilkinson", U.S. Army Combat Engineer , ETO, December 1944 (Sergeant)
This is a scale 1:6 outfit that is for toys, not for a real human.